Add Create React App set up details to jest-enzyme README (#64)
Add Create React App set up details to jest-enzyme README (#64)

* Add Create React App set details to jest-enzyme README

https://github.com/blainekasten/enzyme-matchers/issues/58 had details
of how to set up with Create React App, but they’d be useful in the
readme.

* Add links to Create React App documentation

blainekasten/enzyme-matchers